First National Pictures, Incorporated, and Watterson R. Rothacker production; distributed by First National Pictures, Incorporated. / Produced by Watterson R. Rothacker. Scenario by Marion Fairfax, from the adaptation by Marion Fairfax of the novel The Lost World by Sir Arthur Conan Doyle. Production supervision by Earl Hudson. Research by Willis O’Brien. Models by Marcel Delgado. Stop-motion animation by Willis H. O’Brien. Production design by Milton Menasco. Chief technician, Fred W. Jackson. Assistant director, William Dowling. Cinematography by Arthur Edeson. Edited by George McGuire. Presented by Watterson R. Rothacker. / Premiered 2 February 1925. Released 22 June 1925. / Standard 35mm spherical 1.37:1 format. / Portions of the film appear to have survived only in 16mm reduction prints; a restoration of the film was completed by George Eastman Museum in 1997.

Drama: Fantasy-Adventure.

Survival status: Prints exist in the George Eastman Museum film archive [35mm nitrate positive]; in the film holdings of EmGee Film Library [16mm reduction positive]; and in private film collections [16mm reduction positives, abridged 8mm reduction positives].